In recent years, with the rapid development of communication technology, smartphones have become an indispensable part of social life. signal jammer However, in prison environments, mobile phones have become an important tool for prisoners to carry out illegal activities. Traditional 2G jammers can no longer cope with the signal penetration problem of modern smartphones, resulting in frequent illegal communications. cell phone jammer This article takes the Brier Model Prison in India as an example to explore the technical challenges faced by prisons in dealing with prisoners' illegal use of mobile phones and the need to upgrade their jamming equipment.GPS jammer

1. Current Status of Signal Jamming System in Brier Prison

　　Brier Prison installed 2G mobile phone jammers in 2008 to prevent prisoners from using mobile phones for illegal communications. Wifi jammer However, with the popularity of 3G, 4G and even 5G networks, these jamming devices have become outdated. Prisoners easily bypass 2G jammers by using modern smartphones and continue their criminal activities. The results of the 2022 surprise inspection showed that multiple mobile phones, Bluetooth devices and chargers were seized in the prison, indicating that the existing jamming system has limited effect in preventing prisoners from communicating.

　　Outdated equipment and out of touch with technological upgrades Although the 2G jammers at Brier Prison achieved certain results in the early stages of installation, the effectiveness of the jammers has gradually weakened with the advancement of communication technology. The rapid development of 3G and 4G networks has almost made these jammers lose their shielding effect, especially when prisoners use 4G smartphones, the existing equipment can hardly play any role.

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　　Security risks in the prison environment Due to the failure of jammers, illegal communications are frequent in Brier Prison. It is reported that prison guards seized mobile phones and chargers from multiple prisoner barracks in 2022. These devices were used to contact the outside world and even plan criminal activities. Prisoners access social media platforms such as WhatsApp and Telegram through their mobile phones to conduct illegal transactions and transmit information, which seriously threatens prison management and public safety.

2. Plan to introduce portable jammers

　　To meet these challenges, the management of Brier Prison decided to upgrade the existing jammer system and planned to introduce portable jammers to deal with 4G and 5G signals. This new type of equipment can not only more effectively block the signals of modern smartphones, but also flexibly adjust the interference range to ensure that communications in specific areas are fully controlled.

　　The urgency of upgrading jamming technology The prison governor, Deepak Purohit, said that the existing 2G jammers can no longer meet the security needs of modern prisons, so the authorities are developing a proposal to install portable jammers. These devices will be mainly concentrated near the barracks where prisoners are active to prevent illegal communications and ensure the communication order inside the prison.

　　Feasibility of technical solutions The Indian Electronics Limited (BEL) proposed a plan to install new jamming equipment for prisons several years ago, but the project was not advanced in time due to budget constraints and technical reviews. This time, the Brier Prison decided to review this proposal and give priority to purchasing portable jammers in order to improve the security situation inside the prison in a short period of time.

3. Expected effects of introducing portable jammers

　　Portable jammers not only have higher signal shielding capabilities, but can also interfere with specific frequency bands to ensure that prisoners cannot conduct illegal activities through social media and instant messaging applications. The new equipment will help Brier Prison control internal communications more effectively and reduce the risks of prisoners escaping and planning riots.

Technological upgrade is the only way for prison management

　　With the continuous advancement of modern communication technology, prison management needs to constantly adjust strategies and introduce new technologies to ensure safety and order. The experience of Brier Prison shows that relying solely on old equipment cannot cope with modern communication threats, and there is an urgent need to upgrade the jamming system to cope with the increasingly sophisticated communication methods of prisoners.